Roll glue spreader



Aug. 15, 1933. H FRANC@ 1,922,675

ROLL GLUE SPREADER Filed Jan. 20, 1950 V15 close to the pan-bottom;

Patented Aug. 15, 1933 UNITED STATES ROLL GLUE SPREADER Harry G.Francis, Rushville, Ind., assigner to Chas. E. Francis Co., Rushville,Ind., a Corporation of Indiana Application January 20, 1930. Serial No.421,934

2 Claims.

My invention is concerned with machines for spreading glue or otheradhesive, which machines embody a roll that dips into a glue-pan andthat may be rotated in Contact with the surface oi' the board or otherarticle upon which glue is to be spread. One such machine is shown in myprior Patent No. 1,661,174.

In such prior patent, the pan which contained the glue into which thelower roll dipped was mounted in fixed position relative to the roll,and it was necessary at all times to maintain the glue-level above thelowest point of the roll. This precluded the possibility of using allthe glue in the pan unless the roll was placed very and if it were soplaced, the roll lled such a large proportion or the tank that theglue-capacity thereof was greatly diminished.

It is the object of this invention to produce a roll glue-spreadingmachine in which the glue or other adhesive in the pan may besubstantially all used, and to do this in such a manner that thecapacity of the glue pan is not decreased to an undesirable extent.

I acomplish my object by adjustably supporting the glue-pan in such amanner that it may be adjusted vertically with reference to the rollerwhich dips into the glue it contains.

The accompanying drawing illustrates an embodiment of my invention. Fig.1 is a partial front elevation of a double-roll glue-spreading machinewith parts thereof broken away to illustrate the construction moreclearly; Fig. 2 is an end elevation of the machine; and Fig. 3 is asection on the line 3-3 of Fig. 1 illustrating details of construction.

'Ihe glue-spreading machine illustrated in the drawing is more clearlyshown and described in my prior Patent No. 1,661,174. This isillustrated merely by way of example, as my invention is applicable t0other forms of glue-spreading machines.

In the machine illustrated in the drawing, a frame supports tworotatable rolls 11 and 12 r disposed one above the other. A glue-pan 13is mounted below the roll 11 in such a position that the roll can dipinto a supply of glue or other adhesive in the pan. Associated with theupper roll 12, there is also a glue-pan 14 by 50 means of which glue isapplied to the face of such roll. The boards or other objects to whichglue is to be applied are passed between and in contact with the tworolls, which pick up glue from the two pans respectively associated withthem and apply it to the boards as they pass iently convex outwardlywith its lowest point between the rolls. Scraper or doctor rolls 11' and12 associated respectively with the rolls l1 and 12 limit the amount ofglue which is applied to boards passing between the rolls.

As previously stated, the present invention V contemplates that thegluenpan 13 associated with the lower roll ll will be verticallyadjustable. One method ci accomplishing this result is shown in thedrawing, where the pan 13 is shown as provided at each end with avertical support 15. The supports 15 are slidably received withinsuitable guides 16 mounted on the framev l0 ci the machine. By providingmeans for raising and lowering the supports 15, the glue-pan 13 can beraised or lowered as desired. 70

The means shown in the drawing for vertically moving the supports 15comprises a rock-shaft 20 which extends horizontally generally parallelto the rolls 11 and 12 and offset from the supports 15, as is clear fromFig. 2. Adjacent each of the supports 15, we mount on the roci -s`nait20 an arm 21 which extends outwardly from the shaft to a point beneaththe associated support 15. Desirably, the arms 21 engage the supports 15through rollers 22 mounted on the outer ends of the arms 21. It will beevident that as the shaft 20 is rocked in a counter-clockwise direction(Fig. 1) the glue-pan 13 and supports 15 will be raised; while if theshaft 26 is rocked in the reverse direction, the glue-pan is permittedto drop under the influence of gravity.

For the purpose of rocking the shaft 20, I may secure to it, preferablynear one end, an operating arm 25 which, at its outer end is slotted toreceive slidably a block 26, 'the sides of the slot 'forming bearingsurfaces for the block. The block 26 has a central hole by means ofwhich it is mounted on a cylindrical projection 27 oi a nut 28 which inturn'is mounted upon an adjusting screw 29. The adjusting screw isrotatably supported in iiXed axial position as by means or"bearing-blocks 30 secured to the frame l0. The outer end of the screw 29may be ormed in square or other non- 100 circular cross-section for thereception of a wrench or operating handle by means of which the screwmay be rotated.

It will be apparent that the vertical position of the glue-pan 13 may becontrolled by means 105 of the screw 29. As shown in the drawing, theglue-pan is elevated to such a point that the associated glue-spreadingroll 11 nearly touches the pan-bottom. The pan-bottom isconvenimmediately beneath the roll 11. By this arrangement,substantially all the glue in the pan 13 may be used. Y

When it is not desired to use all the glue in the pan 13, the pan may belowered to decrease the proportion of the roll which lies in thepan, andthereby to increase the capacity oi the pan. Such lowering movement isaccomplished by rotation of the screw 29 which results in movement ofthe nut 28 to the right (Fig. 2) and rocks the shaft 20 in a clockwisedirection. This lowering of the glue-pan not only results in increasingits capacity but also makes it readily accessible for cleaning.

My invention is not limited in its application onlyV to machines of thetype described, as it may be embodied in any machine in which there isincorporated a spreading or applying roll which dips into a supply oiglue or other adhesive in the pan.

I claim as my invention:

l. In combination, a frame, an adhesivespreading roll rotatablysupported therefrom on a substantially horizontal a pan located beneathsaid roll and adapted to contain a supply of adhesive into which theroll may dip, guiding means supporting said pan for vertical movementtoward and away from said roll, a shaft, means operativelyinterconnecting said shaft and pan whereby rotational movement of saidshaft will produce vertical movement of said pan, yand control means foradjusting said shaft, said control means including a screw 10- tatablymounted in said frame.

2. n an adhesive-spreading machine having a frame and anadhesive-spreading roll rotatably mounted on a substantially horizontalaxis in said frame, pan located beneath said roll and adapted to containa supply of adhesive into which said roll may dip, said pan beingmovablytmountcd in'said frame for movement toward and away from saidroll, a shaft mounted in said frame, vmeans operatively interconnectingsaid shaft and pan whereby rotational movement or" said shaft willproduce vertical movement ci said pan, an operating arm secured to saidshaft, a pivot block slidably mounted in said arm, an operating screwrotatably mounted on said frame, and a nut associated with said screwand adapted to move therealong 'when the screw is rotated, said nutbeing connected to said pivot block.

HARRY G. FRANCIS.

